Patch Available for "NetMeeting Desktop Sharing" Vulnerability
Originally posted: October 13, 2000

Summary
=======
Microsoft has released a patch that eliminates a security
vulnerability in NetMeeting, an application that ships with
Microsoft(r) Windows 2000 and is also available as a separate
download for Windows NT 4.0. The vulnerability could allow a
malicious user to temporarily prevent an affected machine from
providing any NetMeeting services and possibly consume 100% CPU
utilization during an attack.

Issue
=====
A remote denial of service vulnerability has been discovered in a
component of NetMeeting. The denial of service can occur when a
malicious client sends a particular malformed string to a port which
the NetMeeting service is listening on and with Remote Desktop
Sharing enabled.

Although the NetMeeting application is provided as part of Windows
2000 products, the application and affected component is not enabled
by default, and customers who have not enabled it would not be at
risk from this vulnerability.